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authorBenoît Ganne <bganne@cisco.com>2019-10-29 11:13:05 +0100
committerDamjan Marion <dmarion@me.com>2019-10-31 22:30:49 +0000
commitc520fe7ab9db6fa60f9e69be990dd5c83eb40522 (patch)
treec47117b2a1e1c6fc26a4219af85ec0b91e9a92f2 /src/vnet/ipsec/ipsec_if_in.c
parent09220b8d0095400028db81e5773d009284d2ab40 (diff)
ipsec: fix esp trace seq number overflow
Do not copy invalid seq number if packet is too small. Type: fix Change-Id: I1e78f5920e9645521f57efccaf35bbf9ce0676a8 Signed-off-by: Benoît Ganne <bganne@cisco.com>
Diffstat (limited to 'src/vnet/ipsec/ipsec_if_in.c')
-rw-r--r--src/vnet/ipsec/ipsec_if_in.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/src/vnet/ipsec/ipsec_if_in.c b/src/vnet/ipsec/ipsec_if_in.c
index f9341d62a68..974227f7a0e 100644
--- a/src/vnet/ipsec/ipsec_if_in.c
+++ b/src/vnet/ipsec/ipsec_if_in.c
@@ -457,7 +457,9 @@ ipsec_if_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
else
clib_memcpy (&tr->key4, &key40, sizeof (tr->key4));
tr->is_ip6 = is_ip6;
- tr->seq = clib_host_to_net_u32 (esp0->seq);
+ tr->seq =
+ len0 >=
+ sizeof (*esp0) ? clib_host_to_net_u32 (esp0->seq) : ~0;
}
if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
{
@@ -468,7 +470,9 @@ ipsec_if_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
else
clib_memcpy (&tr->key4, &key41, sizeof (tr->key4));
tr->is_ip6 = is_ip6;
- tr->seq = clib_host_to_net_u32 (esp1->seq);
+ tr->seq =
+ len1 >=
+ sizeof (*esp1) ? clib_host_to_net_u32 (esp1->seq) : ~0;
}
}
@@ -641,7 +645,9 @@ ipsec_if_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
else
clib_memcpy (&tr->key4, &key40, sizeof (tr->key4));
tr->is_ip6 = is_ip6;
- tr->seq = clib_host_to_net_u32 (esp0->seq);
+ tr->seq =
+ len0 >=
+ sizeof (*esp0) ? clib_host_to_net_u32 (esp0->seq) : ~0;
}
}